Background

Trogoderma granarium is an insect pest of stored food and feed that is believed to be native to the Indian subcontinent, where it was first reported as a pest in 1894 (Athanassiou 2019). It has been recorded as infesting over 100 types of commodities and is currently considered to be one of the most destructive insect pests of stored food worldwide (Athanassiou 2019). The pest is subjected to strict phytosanitary legislations in several countries (EPPO 2020, Australian Government 2020). Interceptions at ports of entry have dramatically increased and the distribution of T. granarium has expanded in recent years (Castañé et al. 2020, USDA 2020). It is thus important to determine if this pest is established or not in a particular country since it has implications both for the national pest risk management and for the trade of grain. This report provides a review of the available information of the presence of T. granarium in Sweden and an assessment of its current establishment status.